Whistle pen



FIG. 1 is a left side elevation view of the whistle pen showing our newdesign;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a bottom plan view thereof with the tip ejected;

FIG. 7 is a left side elevation view thereof;

FIG. 8 is a right side elevation view thereof;

FIG. 9 is a back elevation view thereof;

FIG. 10 is a top plan view with the tip retracted;

FIG. 11 is a top plan view thereof with the tip ejected;

FIG. 12 is a first perspective view thereof with the tip retracted;

FIG. 13 is a second perspective view thereof;

FIG. 14 is a third perspective view thereof;

FIG. 15 is a fourth perspective view thereof;

FIG. 16 is a first perspective view thereof with the tip ejected;

FIG. 17 is a second perspective view thereof;

FIG. 18 is a third perspective view thereof; and,

FIG. 19 is a fourth perspective view thereof.

CLAIM The ornamental design for a whistle pen, as shown and described.